Ghada Dridi

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                                            Ghada Dridi

First call from EWS is failing with error - outlook.office365.com:443 failed to respond

Hello, How did you solve this problem please? Thanks!

First call from EWS is failing with error - outlook.office365.com:443 failed to respond

Hoping it helps someone. I solved it by adding this line of code : exchangeService.getHttpHeaders().put("Connection","close");